From Proto-Indo-European *ser- (“to flow, run”), based either on sulfur's sharp taste, or on a development like “liquid” > “substance that flows easily” > “sulfur”. Cognates include Russian се́ра (séra), Latin serum (“whey”).
Some specialists believe, however, that sērs is a 13th-century borrowing from Old East Slavic (сѣр (sěr), сѣра (sěra)). At any rate, even if the word is not borrowed, its shape may have been influenced by Old East Slavic or Russian.
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sērs m (1st declension)
- sulfur (nonmentallic chemical element with atomic number 16)
- aktīvais sērs ― active sulfur
- organiskais sērs ― organic sulfur
- sēra trioksīds ― sulfur trioxide
- sēra atrades ― sulfur deposits
- sēra savienojumi ― sulfur compounds
- sēra peldes ― sulfur baths
- earwax (waxy substance secreted by the ear)
- auss sērs ― earwax
- sēra korķis ― ear cork (= a lump of earwax in the ear)